Introduction: Increased consumption of sugar-sweetened beverages (SSBs) is strongly associated with weight gain, dental cavities, and a higher risk of chronic diseases among adolescents. However, there is no available FFQ for the Malaysian population individually to evaluate and assess the consumption of SSBs and high-energy dense (HED) foods among adolescents. Method: A 24-hour diet recall with 30 adolescents were performed via Google Meet to identify the most common and frequent types of SSBs and HEDs foods consumed nowadays. The food checklist of SSBs and HED foods from literature review search was also provided to the participants. Experts critically reviewed each food item and provide a score for its relevancy and essentiality. Face validity were conducted among 10 adolescents to validate the developed FFQ. Results: The final FFQ consisted of 63 food items with ten categories. This FFQ showed high content validity for individual items with I-CVI ranging from 0.67 to 1.00 and overall questionnaires with S-CVI/Ave valued at 0.97. The calculation of Kappa statistic showed that this newly developed FFQ has excellent inter-rater reliability at the item level with K > 0.74 for 55 items and K = 0.57 only for 4 items. Most of the items were marked as relevant with a CVR score of 1.00. Conclusion: The findings of this study imply that the newly developed FFQ could be utilised to estimate the intake of SSB and HED foods of Malaysian adolescents.